WCF中ServiceHost能不能host多个服务？

现在我有两个Service类：
UserService
DictionaryService

配置文件是：

  <system.serviceModel>
    <services>
      <service name="DictionaryServer.Dal.UserService">
        <endpoint address="net.tcp://localhost:8001/UserService"
                   binding="netTcpBinding"
           contract="Common.Interface.IUserService" >
        </endpoint>
      </service>
      <service name="DictionaryServer.Dal.DictionaryService">
        <endpoint address="net.tcp://localhost:8001/DictionaryService"
                   binding="netTcpBinding"
           contract="Common.Interface.IDictionaryService" >
        </endpoint>
      </service>
    </services>
  </system.serviceModel>

以下是我目前的解决方案：

    class Program
    {
        static void Main(string[] args)
        {
            ServiceHost host1 = new ServiceHost(typeof(UserService));
            ServiceHost host2 = new ServiceHost(typeof(DictionaryService));
            host1.Open();
            host2.Open();
            Console.WriteLine("The service is ready.");
            Console.ReadLine();
            host1.Close();
            host2.Close();
        }
    }

我的问题就是能不能只用一个ServiceHost实例，来加载两个服务类？
要是用我现在这样的实现方案的话，有许多服务类的话，岂不是打开好多个ServiceHost?